The Kashmir supports different Geodetic datum.
There are two different definitions for datum: one for map and another
for display.
The map datum is a base of the map, which is defined exclusively for
the map. Another map datum is valid for utilization of the map. For Japanese
map TOKYO datum is normally used. The GSI Japan decided to use the same
datum as WGS84 form 2000. This causes shift of coordinate, which you could
know in advance by selecting WGS84 as displaying datum.
Since the elevation data content no information on the geodetic datum
it is defined in following way as default.
| Map | Default Geodetic Datum |
| Mesh File | TOKYO |
| Digital Map 250m Grid | TOKYO |
| Digital Map 50m Grid | TOKYO |
| Bitmap | TOKYO |
| Grayscale | TOKYO |
| USGS 30 sec grid (GTOP30) | WGS-84 |
| USGS 3sec grid (GTOP3) | WGS-84 |
| CHsystem Map | TOKYO |
| EVM Map | TOKYO or WGS-84 (depending on the place) |
| DCM Map | TOKYO or WGS-84 (depending on the place) |
For changing the geodetic datum select [View] - [Select Datum].
If you change the geodetic datum the place name, GPS tracking, routing,
and way points are adjusted according to the new datum automatically.
Changing the geodetic datum causes no displacement of the linked icons.
For normal use select TOKYO for Japan and WGS-84 for other places.
Meaning of Datum for each data
Data of place name, Link icon, waypoint, route, and track can have an
independent datum.
The datum shows which datum has been used for the coordination of the
map. Changing the datum causes no coordination change, which causes
shift on the map.
To convert the coordinate without shift, execute [Datum Conversion] by the property of each data. This converts the coordinate value without shift.